Differentiated eDRX Parameter Configuration for 5G NR and RedCap Power Saving
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Solution Overview
Problem
The existing extended Discontinuous Reception (eDRX) modes for 5G New Radio (NR) and 5G Reduced Capability (RedCap) NR devices face challenges in power saving, particularly when operating in mixed radio environments with both NR and E-UTRA cells, where eDRX parameters for NR and RedCap NR cells are not optimized, leading to inefficient power consumption and potential interference.
Innovation Solution
The implementation of separate eDRX parameters for normal NR UEs, RedCap NR UEs, and UEs using WB-E-UTRA and NB-E-UTRA, allowing for heterogeneous eDRX modes and operations within the same Registration Area (RA), enabling differentiated power saving configurations for different cell types without requiring NAS mobility procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If common eDRX parameters are used for both NR and E-UTRA cells, then device complexity is reduced, but power saving efficiency deteriorates due to non-optimized parameters for different radio types
Solution Approach 1:
The patent segments eDRX parameters into separate configurations for NR cells and E-UTRA cells. The network device maintains different eDRX parameter sets for different radio access types, allowing optimized power saving for each type rather than using a common configuration for all.
Solution Approach 2:
The patent applies local quality by tailoring eDRX parameters specifically to each radio access type (NR and E-UTRA). Each cell type receives customized eDRX parameters optimized for its characteristics, improving power saving efficiency for devices operating on different radio types within the same registration area.
2Use of energy by moving object
If separate eDRX parameters are configured for NR and E-UTRA cells, then power saving efficiency is improved, but device complexity and network configuration complexity increase
Solution Approach 1:
The network device acts as an intermediary that manages the complexity of separate eDRX parameter configurations. It maintains and distributes appropriate eDRX parameters to user devices based on their current radio access type, shielding devices from the complexity of having multiple parameter sets while enabling optimized power saving.
Solution Approach 2:
The system dynamically selects which eDRX parameter set to apply based on the user device's current registration status and radio access type. The network device can switch between common and separate parameter configurations as needed, adapting to changing conditions to optimize power saving without requiring permanent complex configurations.
3Ease of operation
If a single eDRX cycle is used for all cell types, then configuration simplicity is maintained, but power saving performance deteriorates due to inability to optimize for specific cell characteristics
Solution Approach 1:
The patent segments eDRX configuration into separate parameter sets for NR and E-UTRA cells, allowing each to be optimized independently. This segmentation enables the network to configure eDRX parameters that are specifically tuned to the characteristics of each radio access type, improving power saving performance while maintaining manageable configuration complexity through the network device's coordination.
Data Source
AI summary
A method (900) performed by a first network function (302), the method comprising: transmitting (s902) toward a second network function a message including power saving information associated with new radio (NR) user equipments (UEs) and/or NR reduced capabilities (RedCap) UEs, wherein the power saving information is used for transmitting a paging message towards a user equipment (UE) from the second network function.